JPH1161829A - Vegetation net - Google Patents

Abstract

PROBLEM TO BE SOLVED: To successfully vegetate plants, prevent the collapse of a slope, and leave no residual material by fitting a hydrolytic vegetation sheet to one face of a coarse coconut net, and integrally sewing them. SOLUTION: A hydrolytic vegetation sheet 3 is fitted to one face of a coarse coconut net 2, and they are integrally sewn at proper knots to form a vegetation net 1. Coconut fiber strands with the diameter 1-10 mm are woven at the rate of 5-15 strands in 10×10 cm to form the coconut net 2, and a biodegradable synthetic resin fiber thread is used as a suture. The vegetation sheet 3 is constituted of water-soluble paper 4a, 4b, a vegetation substrate 5, and a mosquito net texture 6. When the vegetation net 1 is arranged in the low water area of a river, the sprouting and growth of seeds are accelerated, plants are successfully vegetated, and the collapse of a slope surface is effectively prevented. The vegetation net 1 is corroded after 2-5 years, and it does not leave a residual material affecting the environment of the river.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vegetation net for protecting the environment of a low riverbed of a river.

[0002]

2. Description of the Related Art Conventionally, in order to protect a low riverbed of a river, a construction method of consolidating a waterside using a block made of concrete or mortar is often adopted. In recent years, greening of waterfronts has been promoted, and the emphasis has been placed on scenic nature. In addition to protecting rivers and greening, vegetation that combines seeds with a special bag-like mat with excellent durability A construction method of attaching a vegetation structure or the like filled with a base material to a waterside is also being adopted.

[0003]

However, the above-described construction method using concrete or mortar not only loses the natural purification effect of the river at all, prevents small animals from leaning on the low riverbed of the river, but also increases the efficiency of concrete and mortar. The mortar's skin often damages the surrounding natural scenery, giving the impression of a deadly landscape. For this reason, in recent years, environmental reforms in rivers have become mandatory due to law revisions,
It is required that the use of concrete, mortar, etc. be exempted from the construction of river disaster prevention laying.

[0004] On the other hand, in order to lay the river disaster prevention and greening as in the prior art, a vegetation structure or the like, which is filled with a vegetation base material containing seeds in a special bag-like mat having excellent durability, is attached to the waterside. When the method is performed, even if the greening of the waterside is achieved, a vegetation mat having excellent durability remains behind, and the vegetation mat may impair the landscape.

Accordingly, the present invention has been made in view of such circumstances, and protects low riverbeds of rivers, enables natural vegetation, and leaves residues that impair the landscape. It is an object of the present invention to provide a vegetation net that can achieve environmental improvement without any problem.

[0006]

That is, the vegetation net according to the present invention is characterized in that a water-disintegrating vegetation sheet is attached to one side of a coarse coconut net, and these are integrally sewn together to an appropriate mesh. There is. In other words, coconut nets have excellent heat retention and can prevent freezing, have high evaporation suppression power, and can prevent movement and runoff of surface soil and seeds on the slope due to running water, so not only promote seed germination and growth but also The plant can be successfully vegetated and the slope surface can be effectively prevented from collapsing. Furthermore, coconut nets generally corrode 2 to 5 years after construction and leave no residue, so there is no risk of damaging the river landscape after plant vegetation.

[0007] Further, as the coconut net, 1 to 10 m
5 to 1 per 10 x 10 cm
The use of a knitted fabric having five fibers can easily obtain the above-mentioned effect.

[0008] By using a biodegradable synthetic resin fiber thread as the suture, the vegetation net can be completely corroded and decomposed, leaving a residue which affects the environment of the river. It is completely gone.

[0009]

1 to 4 show a first embodiment of the present invention. FIG. 1 is an exploded perspective view showing the structure of a vegetation net 1 of the present invention. That is, the vegetation net 1 includes the palm net 2 and the vegetation sheet 3. The vegetation sheet 3 of this example is composed of the water-soluble papers 4a and 4b and the vegetation base material 5.
And mosquito net 6.

This vegetation net 1 is, as shown in FIG.
In the low riverbed 8 of the river 7, the slope 8a and the plane 8
b. Also, the vegetation net 1 of this example is laid at a position higher than the water surface 7a of the river 7 to protect the slope 8a and the flat surface 8b of the low flood water floor 8 from the collapse when the flooding occurs. It promotes greening in the low water floor 8.

FIGS. 3 and 4 are views showing in detail the structure of the vegetation net 1 of this embodiment. The coconut net 2 forming the uppermost layer is made of, for example, a string-shaped coconut fiber material having a thickness of 5 mm.
It is knitted so that there are 7 pieces per 0 × 10 cm. The thickness of the coconut net 2 is preferably 1-1.
0 mm, and preferably 5 to 15 lines per 10 × 10 cm. 1mm thickness of palm net material
If it is less than the above, the strength is reduced, there is a possibility of breakage due to running water, and the blocking property as a net is reduced, and the net covering effect is reduced. If it is 10 mm or more, the obstructiveness is too large, which hinders the emergence of the plant from the net, and the knitting property deteriorates. 10 × 10 coconut net
The use of 5 to 15 pieces per cm also takes into consideration the covering effect and the emergence of the plant, while keeping the net obstruction at an appropriate level.

That is, the coconut net 2 made of the above-mentioned coconut fiber has high strength even when it is arranged on the low riverbed 8 of the river 7. Therefore, by attaching the vegetation net 1 to the slope 8a with an anchor or the like not shown in the state where the palm net 2 is positioned on the uppermost layer, there is no fear of cutting the vegetation net 1 by running water and the like. It is excellent in the function of preventing movement and erosion of the surface soil on the surface 8a. Also,
The coconut net 2 has an excellent heat-retaining effect, has a function of high evaporation suppressing power, and is also effective in preventing freezing, and therefore has a high germination and growth promotion effect of vegetation plants. And since the coconut net 2 generally corrodes 2 to 5 years after construction, it does not leave its residue and does not continue to affect the environment of the river 7.

Since the vegetation sheet 3 attached to the palm net 2 has two water-soluble papers 4a and 4b, it is composed of plant seeds, fertilizer, soil improving material and the like between them. 4a, 4 so that the vegetation base material 5 is sandwiched therebetween.
By sticking b, the seed 5 can be held. As the sheets constituting the water-decomposable papers 4a and 4b, it is also possible to use bon rick paper, kraft pulp paper, crepe paper, non-woven fabric of soup, PVA film or the like.

Further, since the mosquito nets 6 for reinforcement are adhered to the back surface of the water-soluble paper 4b, when a large fertilizer or the like is sandwiched between the water-soluble papers 4, the fertilizer is removed. Retention is improved. The mosquito net 6 is made of a corrosive net such as souff.

By suturing the palm net 2 and the vegetation sheet 3 at, for example, a suturing interval d of 3 to 50 cm, it can be easily handled as one vegetation net 1. The stitching interval is one row or several rows at both ends and the middle part in the width direction of the vegetation net.
The length is set to 2 to 10 cm to integrate other materials of the palm net, and to prevent movement or leakage of vegetation materials such as seeds and fertilizer sandwiched between water-soluble papers. As the material of the suture thread 9 used for the suturing, for example, a thread of biodegradable resin fiber, hemp thread, cotton thread, or the like can be used as a component of a corrosive product.

In addition, as a biodegradable synthetic resin constituting the suture 9, for example, a natural polymer synthetic resin such as a complex of chitosan and cellulose, a microbial fermented aliphatic polyester (for example, a trade name of Shimadzu Corporation) : “Lactolone”) and synthetic resins of fermentation production system such as biocellulose, and further, as synthetic resin of chemical synthesis system, aliphatic polyester ε-caprolactone type and ε-caprolactone type which is a condensation of dicarboxylic acid and diglycol. (For example, Showa Kobunshi's trade name: "Bionole") and the like can also be used.

In the case where the suture thread 9 does not necessarily have to be corroded, a thread made of corrosion-resistant polyester, vinylon, or the like can be used as the material of the suture thread 9. These yarns are mainly twisted yarns, and have a thickness of 0.5 to 3 mm. In the case of a plastic yarn such as polyester, a monofilament yarn can be used. Even a yarn having a thickness of about 3 mm can be formed by using a high-tensile plastic yarn. Thus, by using the suture thread 9 as a non-corrosive thread, the vegetation net 1 has a partially corrosive function, and the non-corrosive suture thread 9 maintains the slope protection effect to some extent. It is also possible.

FIG. 5 is a view showing another means for integrating the palm net 2 and the vegetation sheet 3 described above. That is, the vegetation net 1 of this example is stitched using the stapler 10, and the materials 2 and 3 are integrated with the stitching interval being 3 to 50 cm and the stitching stitch being 2 to 10 cm as described above. By integrating the palm net 2 and the vegetation sheet 3 using the stapler 10 as in this example, there is an advantage that the vegetation net 1 can be formed with relatively simple equipment.

FIG. 6 shows a second embodiment of the vegetation net 1 of the present invention. In this figure, the difference from FIGS. 1 to 5 is that the vegetation sheet 3 is made of biodegradable synthetic resin fibers or organic type. It is composed of a thin cotton 11 adhered on a corrosive fiber net such as a corrosive fiber and a vegetation substrate 5 adhered to the thin cotton 11. That is, since the configuration of the vegetation net 1 of this example is simplified, it can be manufactured at lower cost. As another example of the vegetation sheet, the side to which the above-mentioned vegetation base material is adhered may be a lower side (slope side). It has excellent adhesiveness, prevents drying of seeds, and improves germination and growth of plants.

Further, as a material that can be used for the vegetation sheet, a nonwoven fabric of a corrosive fiber material or a nonwoven fabric in which fibers are easily dispersed even if it is not necessarily corrosive can be used. Various forms can be adopted, such as sandwiching, using this nonwoven fabric as the material on the lower side of the vegetation sheet, using water-soluble paper on the upper side, or using a mosquito net overlaid on this.

FIG. 7 shows a third embodiment of the present invention, which is a further modification of the vegetation net 1 shown in FIG. In this figure, reference numeral 6a denotes a pocket formed in the corrosive fiber net 6, and reference numeral 12 denotes a fertilizer bag that is inserted into the pocket 6a and attached to the vegetation net 1. By attaching the fertilizer bag 12 to the back surface of the vegetation net 1 as in this example, a long-term replenishment of fertilizer nutrients and a water retention effect can be exhibited. In addition, as another method of attaching a fertilizer bag, a fertilizer bag can be accommodated in a vegetation sheet or between a vegetation sheet and a palm net. By doing so, there is no protrusion on the back surface of the vegetation net, and the adhesion of the vegetation net to the slope is improved.

FIG. 8 is a modification of the first embodiment of the vegetation net 1 shown in FIGS. 1 to 4, and shows a fourth embodiment.
In this figure, reference numeral 13 denotes a wire mesh attached to the surface of the palm mat 2 and sewn. The wire mesh 13 can further enhance the effect of preventing scouring of the low riverbed 8 of the river 7.
In addition, while the wire mesh 13 has an effect of protecting the slope 8a for a considerable period of time, it eventually disappears due to rust and the like, so that the wire mesh 13 does not continuously remain in the river 7 and restores its environment naturally. be able to.

[0023]

As described above, the vegetation net according to the present invention not only promotes the germination and growth of seeds, but also succesfully vegetates the plants and effectively suppresses the collapse of the slope surface. Can be prevented. Furthermore, coconut nets generally corrode 2-5 years after construction and leave no residue,
There is no risk of damaging the river landscape after plant vegetation. And, if a biodegradable synthetic resin fiber thread is used as the suture, the vegetation net can be completely corroded and decomposed, leaving residues that affect the environment of the river. Completely gone.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a vegetation net according to the present invention.

FIG. 2 is a longitudinal sectional view showing a state where the vegetation net is installed in a river.

FIG. 3 is an enlarged longitudinal sectional view showing a configuration of the vegetation net.

FIG. 4 is a perspective view in which a part according to a method for manufacturing the vegetation net is seen through.

FIG. 5 is a perspective view showing another method for manufacturing the vegetation net.

FIG. 6 is an exploded perspective view showing a second embodiment of the vegetation net.

FIG. 7 is an exploded perspective view showing a third embodiment which is a modified example of the vegetation net.

FIG. 8 is an exploded perspective view showing a fourth modified example of the vegetation net.

[Explanation of symbols]

 1 ... vegetation net, 2 ... palm net, 3 ... vegetation sheet.

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Kazumasa Shibata 590-1 Takao, Tsuyama City, Okayama Pref.

Claims (3)

[Claims] 1. A vegetation net comprising a coarse palm net, and a water-disintegrable vegetation sheet attached to one side of the coarse coconut net, and these are integrally sewn together with an appropriate texture. 2. The vegetation net according to claim 1, wherein the coconut net is formed by knitting and twisting a cocoon fiber having a diameter of 1 to 10 mm with a length of 5 to 15 per 10 × 10 cm. 3. The vegetation net according to claim 1, wherein a biodegradable synthetic resin fiber thread is used as the suture.